Data as of Nov 11, 2026
12.72.32.0/21
7 residential-proxy exits · 30 daysAT&T Enterprises, LLC
Announcement
this exact prefix
RPKI valid
Announced by
Type
Mobile
Risk
10 / 100 · Low
Shared address
Residential-proxy exits
Proxy exits
7
0.34% of its addresses · 30 days
Spread
3 of 8
/24s with at least one exit
Providers
28
selling exits here
Oct 12, 2026 – Nov 10, 2026
Exits seen per day
867 observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 12.72.37.0/24 | 0 | 5 | |
| 12.72.32.0/24 | 0 | 1 | |
| 12.72.39.0/24 | 0 | 1 |
Proxy providers listing exits
- BottingTools
- Byteful
- CatProxies
- ColaProxy
- CoreProxy
- Decodo
- EnigmaProxy
- IPRoyal
- LemonBright
- MarsProxies
- NextProxy
- NodeMaven
- NovaProxy
- Oxylabs
- ProxyEmpire
- ProxyRack
- ProxyWing
- RainProxy
- Shifter
- SpyderProxy
- TORCHPROXIES_BASIC
- TORCHPROXIES_PREMIUM
- TORCHPROXIES_X
- Thordata
- TrustProxy
- VitalExclusive
- WealthProxies
- ZENPROXY_PREMIUM
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 12.72.0.0/17 since Jul 2023 | AS20057 | Mobile | 14 | AT&T Enterprises, LLC | |
| 12.0.0.0/9 | AS7018 | Residential | 8,119 301 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,428 538 always on | AT&T Enterprises, LLC |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 12.0.0.0/8 | 16,777,216 | ATT | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Aug 23, 1983 | abuse@ |
| └ 12.72.0.0/15 | 131,072 | ATTSVC-12-72-0-0 | AT&T Worldnet Services (C00686968) · US | Reassigned | Oct 15, 2003 | abuse@ via ATT |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
IPv4 market
Holder
- Organization
- AT&T Enterprises, LLC
- Handle
- AEL-360
- Range
- 12.
0. 0. 0/ 8 - Registration type
- Direct Allocation
- Record created
- Aug 23, 1983
- Legacy
- yes
Origin network
AS20057
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Mar 20, 2001
- Domain
- att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2025
- Current origin since
- Jan 2025 · 1.8 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 12.72.32.0/21 | AS20057 | /21 | ARIN | RPKI valid |
| 12.72.0.0/17 | AS20057 | /17 | ARIN | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS20057 | ARIN | AT&T Enterprises, LLC | MNT-AEL-360 | Sep 22, 2026 |
Whois
Registration for this announcement
- Range
- 12.
72. 0. 0/ 15 - Netname
- ATTSVC-12-72-0-0
- Registrant
- AT&T Worldnet Services
- Organization
- AT&T Worldnet Services (C00686968)
- Type
- Reassigned
- Handle
- NET-12-72-0-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Oct 15, 2003
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN